how exercise url settlement interpreter used django ror php

what's best proceed exercise url interpreter / dispatcher, such found ror, php?

it should means conclude query twine follows:

• /users/show/4 maps to
  
  
  
  
  • area = users
  
  
  • action = show
  
  
  • id = 4
  
  


• /contents/list/20/10 maps
  
  
  
  
  • area = contents
  
  
  • action = list
  
  
  • start = 20
  
  
  • count = 10
  
  


• /toggle/projects/10/active maps to
  
  
  
  
  • action = toggle
  
  
  • area = projects
  
  
  • id = 10
  
  
  • field = active
  
  

where query twine specified / post variable, twine upheld interpreter.

edit: i'd move an doing does mod_rewrite.

edit: doubt purify urls, nonetheless interpreting url. drupal uses mod_rewrite route requests such . following interprets value $_request['q']. i'm prying interpreting part.